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The Rio de Janeiro is 19 miles [31 kilometers] long and 17 miles [28 kilometers] wide. It originally was mistaken for a river and temporarily named Rio de Janeiro. Once it was discovered to be a bay its name was changed to 'Baía da Guanabara' ['Guanabara Bay'], which means 'bay similar to the sea' in Tupi-Guarani. It's Brazil's second largest bay in area [159 square miles; 412 square kilometers].

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15y ago

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